Lewis-Williams, J. David – South African rock art researcher who proposed a shamanistic interpretation (also known as the “trance hypothesis”) to some of this diverse imagery. Attending to the similarities between the Southern African material and European Paleolithic cave art, Lewis-Williams and Thomas Dowson developed a neuropsychological model for establishing whether a given rock art tradition is derived from altered states of consciousness, and if so, how it is shamanistic, within its specific community context. Lewis-Williams has also written a volume on cave art (The Mind in the Cave, 2002) and the European Neolithic. LewisWilliams is professor emeritus of rock art at the University of the Witwatersrand, Johannesburg.
Historical Dictionary of Shamanism by Graham Harvey and Robert J. Wallis 2007